In this section
@article{Lefauve:2025:0295-5075/adb908,
author = {Lefauve, A and Cheung, YHM and Jiang, X and Couchman, MMP},
doi = {0295-5075/adb908},
journal = {EPL},
title = {Routes to stratified turbulence and temporal intermittency revealed by a cluster-based network model of experimental data},
url = {http://dx.doi.org/10.1209/0295-5075/adb908},
volume = {149},
year = {2025}
}
TY - JOUR
AB - Modelling fluid turbulence using a “skeleton” of coherent structures has traditionally progressed by focusing on a few canonical laboratory experiments such as pipe flow and Taylor-Couette flow. We here consider the stratified inclined duct, a sustained shear flow whose density stratification allows for the exploration of a wealth of new coherent and intermittent states at significantly higher Reynolds numbers than in unstratified flows. We automatically identify the underlying turbulent skeleton of this experiment with a data-driven method combining dimensionality reduction and unsupervised clustering of shadowgraph visualisations. We demonstrate the existence of multiple types of turbulence across parameter space and intermittent cycling between them, revealing distinct transition pathways. With a cluster-based network model of intermittency we uncover patterns in the transition probabilities and residence times under increasing levels of turbulent dissipation. Our method and results pave the way for new reduced-order models of multi-physics turbulence.
AU - Lefauve,A
AU - Cheung,YHM
AU - Jiang,X
AU - Couchman,MMP
DO - 0295-5075/adb908
PY - 2025///
SN - 0295-5075
TI - Routes to stratified turbulence and temporal intermittency revealed by a cluster-based network model of experimental data
T2 - EPL
UR - http://dx.doi.org/10.1209/0295-5075/adb908
VL - 149
ER -
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